42 BULLETIN 179, U. S, DEPARTMENT OF AGEICULTUEE. 



Prunus munsoniana is found (fig. 2) in rather rich soils and ranges 

 from central Tennessee and southwestern Kentucky through northern 

 Mississippi, northern and central Arkansas, central Missouri, and 

 southeastern Kansas to the valley of the Little Wichita Kiver, in 

 northern Texas. 



Although Prunus munsoniana is the last species prominent in 

 horticultm-e to receive sj)eciiic botanical recognition, it embraces 

 horticultural varieties among the earliest, if not the earhest, of any 

 American species to be described. It embraces one or more varieties 

 that are probably the best known and most widely disseminated 

 among those of native origin. There 'will perhaps be some question 

 among horticulturists concerning the reference of the variety Wild 

 Goose to this species, but a most critical study of specimens of this 

 variety fi'om many locahties fails to reveal a single botanical char- 

 acter in which it differs from others. The varieties xVrkansas, Clifford, 

 Mrs. Cleveland, Cooper, Do^\^ling, Choptank, Davis, Drouth King, 

 Hollister, Hughes, Jewell, Macedonia, Miles, Milton, Newman, 

 Nimon, Ohio, Osage, Poole Pride, Pottawattamie, Robinson, Texas 

 Belle, Thousand and One, Whitaker, Wild Goose, Wonder, and Wooten, 

 all belong to this species. Nearly all of the varieties have until 

 recently been referred to Prunus angustifolia, from which the present 

 species is distinguished by its more vigorous and hardy character, 

 larger and more pointed leaves, larger flowers, and glandular calyx 

 lobes. 



Prunus Munsoniana Hybrids. 



The originators of new varieties have made many hybrids oi Prunus 

 munsoniana with other species. Crosses are supposed to have been 

 made with P. araericana, P. angustifolia varians, P. cerasifera, 

 (PI. XIII, figs. 11 and 12, Marianna), P. Tiortulana, P. hortulana 

 mineri, P. trifiora, P. simonii [(munsoniana X trifiora) X (trifiorax 

 simonii) and with Amygdalus persica. 



Prunus Angustifolia Marsh. 



(Chickasaw plum.) 



Prunus angustifolia Marsh, 1785, Arb. Amer., p. 111. 



Prunv^ chicasa Michx., 1803, Fl. Bor. Amer., t. 1, p. 284. 



Prunus stenophyllus Raf., 1817, Fl. Ludov., p. 98. 



Cerasus chicasa Ser., 1825, in DC. Prodr., para. 2, p. 538. 



Prunus chicasa angustifolia Roem., 1847, Fam. Nat. Sym. Mon., fasc. 3, p. 58. 



Leaves (PI. IV, fig. 2) lanceolate or oval-lanceolate, 2 to 5 cm. long, 

 1 to 2 cm. broad, usually strongly conduphcate, narrowed or rarely 

 roimded toward the base, acute at the apex or obtuse when they first 

 unfold, the margin finely glandular serrate, glabrous and lustroug 



